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Meaning & History
Variant spelling of RUE and RU as well as a short form of any name beginning with the syllable Ru-, such as RUBY, RUFUS or RUPERT. It has been occasionally used as a name in its own right from the 20th century onwards.One fictional character is a young kangaroo (joey) called Roo (who's mother is named Kanga) that first appeared in the book, Winnie-the-Pooh, by A. A. Milne, published in 1926.